6449942 has 4 divisors (see below), whose sum is σ = 9674916. Its totient is φ = 3224970.

The previous prime is 6449923. The next prime is 6450007. The reversal of 6449942 is 2499446.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 6449896 and 6449905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1612484 + ... + 1612487.

It is an arithmetic number, because the mean of its divisors is an integer number (2418729).

Almost surely, 2^6449942 is an apocalyptic number.

6449942 is a deficient number, since it is larger than the sum of its proper divisors (3224974).

6449942 is a wasteful number, since it uses less digits than its factorization.

6449942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224973.

The product of its digits is 62208, while the sum is 38.

The square root of 6449942 is about 2539.6736010755. The cubic root of 6449942 is about 186.1452405483.

The spelling of 6449942 in words is "six million, four hundred forty-nine thousand, nine hundred forty-two".